/*
 * Copyright 2019 Pnoker. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package com.pnoker.device.group.util;

public class DatagramUtils {

    /**
     * 打印十六进制数据报文
     *
     * @param b
     * @param length
     * @return
     */
    public static String hexDatagram(byte[] b, int length) {
        StringBuffer buffer = new StringBuffer();
        for (int i = 0; i < length; i++) {
            String hex = Integer.toHexString(b[i] & 0xFF);
            /* 不足两位前面补零处理 */
            if (hex.length() == 1) {
                hex = '0' + hex;
            }
            buffer.append(hex.toUpperCase());
        }
        return buffer.toString();
    }
}
